mifare 4k offers 4096 bytes split into forty sectors, of which 32 are same size as in the 1K with eight more that are quadruple size sectors. The last block of each sector is used to store the access keys and conditions; also the first block of sector 0 is used to store the card serial number (CSN) or UID and other identifying information. Therefore, the amount of space used to store application data is in practice 3440 bytes.

We also provide printing and encoding facility for all kinds of RFID cards, tags, keyfobs, wristbands, etc.. please contact us for pricing.